diff --git a/TODO.md b/TODO.md
index f023bd0..3e116c3 100644
--- a/TODO.md
+++ b/TODO.md
@@ -25,3 +25,8 @@ O> 16 KB paging for NDK libs
 * re-visit sampling rate and channel count.
   MixingPlayer currently forces both to 48000 and 2 respectively,
   regardless of what Android says would be optimal.
+
+## Before release
+
+* check librubberband license
+